Climate averages 1991–2020
Southport weather
in August.
A mild, wet month: one of the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Southport: daytime highs average 18.2°C and nights cool to about 13.7°C. By daytime temperature it is one of the warmest months of the year.
Expect about 117 mm of rain on roughly 17 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 50 min on an average August day.
The nearest other city in this atlas is Blackpool (19 km away). In August its highs average 17.7°C, 0.5°C cooler than Southport, with 117 mm of rain.
Among the 143 cities listed in the United Kingdom, Southport ranks joint 124th of 143 for the warmest August highs and joint 141st of 143 for the driest August (rainfall, lowest first). The mean August high of those 143 cities is 19.7°C; Southport is 1.5°C cooler than that mean.
From August to September, average highs fall by 1.8°C to 16.4°C, and monthly rainfall falls from 117 mm to 110 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Southport climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.1°C3.6°C | 3.6°C | 108 | 17.0 | 8.18 h |
| February | 7.3°C3.4°C | 3.4°C | 88 | 14.8 | 9.810 h |
| March | 9.0°C4.2°C | 4.2°C | 81 | 14.4 | 11.812 h |
| April | 11.3°C5.8°C | 5.8°C | 70 | 12.8 | 14.014 h |
| May | 14.1°C8.6°C | 8.6°C | 73 | 12.5 | 15.916 h |
| June | 16.5°C11.5°C | 11.5°C | 86 | 13.5 | 17.017 h |
| July | 18.2°C13.5°C | 13.5°C | 97 | 16.1 | 16.517 h |
| August, selected | 18.2°C13.7°C | 13.7°C | 117 | 16.8 | 14.815 h |
| September | 16.4°C11.9°C | 11.9°C | 110 | 14.8 | 12.813 h |
| October | 13.3°C9.3°C | 9.3°C | 137 | 17.3 | 10.611 h |
| November | 9.9°C6.5°C | 6.5°C | 138 | 18.4 | 8.79 h |
| December | 7.6°C4.2°C | 4.2°C | 139 | 17.4 | 7.68 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Blackpool in AugustUnited Kingdom · 19 kmHigh 17.7°C · Low 13.6°C · 117 mm rain
- Fylde in AugustUnited Kingdom · 22 kmHigh 17.8°C · Low 13.4°C · 117 mm rain
- Preston in AugustUnited Kingdom · 24 kmHigh 18.2°C · Low 12.5°C · 112 mm rain
- Liverpool in AugustUnited Kingdom · 26 kmHigh 18.4°C · Low 13.3°C · 99 mm rain
- Wigan in AugustUnited Kingdom · 27 kmHigh 18.7°C · Low 12.5°C · 89 mm rain
- St Helens in AugustUnited Kingdom · 28 kmHigh 18.7°C · Low 12.7°C · 89 mm rain
- Blackburn in AugustUnited Kingdom · 37 kmHigh 17.9°C · Low 11.6°C · 108 mm rain
- Bolton in AugustUnited Kingdom · 39 kmHigh 18.2°C · Low 11.8°C · 89 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Southport) is explained once on the Southport year overview and on the Sources, method and limits page.
Blackpool and Fylde lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.